Door lock

Details Door lock Door lock

1990-05-29

1991-05-28

Burke, Wallace R.

Tools and hardware

Locking or closing device

Lock, latch or bolt

D 8331

Patent

active

D03171116

REFERENCES:
patent: 721045 (1903-02-01), Keller
patent: 3815945 (1974-06-01), Lamphere
patent: 3963269 (1976-06-01), Rosenberg
patent: 4076294 (1978-02-01), Holmberg
patent: 4195870 (1980-04-01), Percoco
patent: 4326394 (1982-04-01), Stein
patent: 4506527 (1985-03-01), Grill
patent: 4629231 (1986-12-01), Bouchard

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